X-ray irradiator

Abstract

Provided is an X-ray irradiator which reduces the occurrence of discharge resulting from the difference in electric potential in the X-ray irradiator, and which concurrently achieves reduction in size and weight. In an X-ray irradiator (1), an X-ray tube (11) and a high-voltage generator (2) are installed inside a casing (18), and an insulation oil (13) is filled in the casing (18). The high-voltage generator (2) is configured by arranging and electrically connecting together multiple ring-shaped voltage amplifying units (21). An anode (14) and a cathode (15) of the X-ray tube (11) are fitted in and thus installed in hollow portions of the voltage amplifying units (21).

Description

TECHNICAL FIELD[0001]The present invention relates to an X-ray irradiator, and specifically an X-ray irradiator used for a non-destructive inspection in which specimens such as food and industrial products are irradiated with an X-ray to detect a foreign material and a defect in the specimens on the basis of an amount of X-ray transmission. In addition, the present invention relates to an X-ray irradiator used for an inspection in the field of medicine.BACKGROUND ART[0002]A type of an X-ray irradiator including an X-ray tube, a high-voltage power supply, and a power supply for lighting a filament is most widely used among various types of X-ray irradiators. A high voltage of 10 kV to 500 kV depending on use is applied to the X-ray tube. Once the filament is lit, thermal electrons are emitted from a cathode part of the X-ray tube. The thermal electrons are accelerated by the high voltage, and thus collide against an opposed anode part. An X-ray is generated from energy produced by th...

AI Technical Summary

Benefits of technology

The present invention relates to an X-ray irradiator that uses a mono-block or mono-tank configuration to prevent discharge and facilitate insulation. The X-ray irradiator includes an X-ray tube, a high-voltage power supply, and a power supply for lighting a filament. The X-ray tube is placed in a casing filled with insulation oil or resin to prevent discharge. The high-voltage generator used in the X-ray irradiator uses a transformer and Cockcroft-Walton circuits to generate a high voltage. The distribution of voltage in the conventional X-ray irradiator is shown in FIG. 9, which shows a large difference in electric potential between the X-ray tube anode and the X-ray shielding member, which may lead to discharge. The present invention solves this problem by providing an X-ray irradiator that prevents discharge and facilitates insulation.

Problems solved by technology

Thus, it has been difficult to deal with these connectors.

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